/**
 ***************************************************** 
 * 方法简介: 获取数据
 * @throws IOException
 ***************************************************** 
 */
private void initDatas() throws IOException {
	//Tree.txt放在assets根目录下
	InputStream myInput = this.getAssets().open("Tree.txt");
	InputStreamReader isr = new InputStreamReader(myInput, "utf8");
	// 构造一个BufferedReader类来读取文件
	BufferedReader br = new BufferedReader(isr);
	String str = null;
	// 使用readLine方法，一次读一行
	while ((str = br.readLine()) != null) {
		System.out.println(str);
	}
	br.close();
}